help. output shaft seal question

about to go at it and replace my control arms, ball joints, tie rods, brakes, links, ect ect this weekend but ive run into a predicament....my driver's side output shaft seal is going out because its leaking oil and it took a quart of mt90 before filling up today.

is it worth waiting a little bit and getting seals to replace at the same time as everything else? i know ill need new seals and axle bolts so far... not too sure on what else it requires to replace.

and yeah, its not a rear main seal; its definitely gear oil. im anxious to start replacing all of my parts, but dont know if 1) i have all of the equipment to replace control arms, and 2) the confidence